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The current-driven magnetization switching in CoFeB/MgO/CoFeB magnetic tunnel junctions (MTJs) with various free layer materials including synthetic structure was studied in this paper. The MTJ films were deposited on SiO2/Si substrates using RF magnetron sputtering. The tunnel magnetoresistance (TMR) ratios and current-voltage (I-V) characteristics of the the MTJs were measured at room temperature...
In this work, CoPtCr-oxide films were deposited with three types of oxide additives(Si-O, Cr-O, Ti-O). Their magnetic, grain morphological properties and oxidation kinetics were systematically studied by varying oxygen reactive sputter conditions and were correlated with PMR performance. CoPtCr-oxide media has been reported to have small grains with good magnetic decoupling for perpendicular recording...
This article presents experiments on the determination of the length scales of magnetic correlation in ε-Co nanoparticle assemblies using SANS (small angle neutron scattering). In this experiment a 0.5 nm neutron beam was passed through a sealed sample containing a dense assembly of the nanoparticles, and the scattered intensity was collected with two-dimensional detector. Data were collected with...
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